diff --git a/docs/upgrade_issues.xml b/docs/upgrade_issues.xml
index fb3098af5..11e1b745d 100755
--- a/docs/upgrade_issues.xml
+++ b/docs/upgrade_issues.xml
@@ -104,10 +104,11 @@
           </listitem>
         </itemizedlist>
 
-        <para>Failure to do so will result in the following fatal compilation
-        error:</para>
-
-        <para>ERROR: SHOREWALL_COMPILER=shell is no longer supported.</para>
+        <para>Failure to do so will result in the following
+        warning:<blockquote>
+            <para>WARNING: SHOREWALL_COMPILER=shell ignored. Support for
+            Shorwall-shell has been removed in this release.</para>
+          </blockquote></para>
       </listitem>
 
       <listitem>